Scroll overflow for long equations

CHANGELOG.md

@@ -18,6 +18,8 @@
 
 * ![Bugfix][badge-bugfix] HTMLWriter no longers prints a warning when encountering `mailto:` URLs in links. ([#1472][github-1472])
 
+* ![Bugfix][badge-bugfix] In the HTML output, display equations that are wider than the page now get a scrollbar instead of overflowing. ([#1470][github-1470], [#1476][github-1476])
+
 ## Version `v0.25.3`
 
 * ![Feature][badge-feature] Documenter can now deploy from GitLab CI to GitHub Pages with `Documenter.GitLab`. ([#1448][github-1448])
@@ -696,9 +698,11 @@
 [github-1466]: https://github.com/JuliaDocs/Documenter.jl/issues/1466
 [github-1468]: https://github.com/JuliaDocs/Documenter.jl/pull/1468
 [github-1469]: https://github.com/JuliaDocs/Documenter.jl/pull/1469
+[github-1470]: https://github.com/JuliaDocs/Documenter.jl/issues/1470
 [github-1471]: https://github.com/JuliaDocs/Documenter.jl/pull/1471
 [github-1472]: https://github.com/JuliaDocs/Documenter.jl/pull/1472
 [github-1474]: https://github.com/JuliaDocs/Documenter.jl/pull/1474
+[github-1476]: https://github.com/JuliaDocs/Documenter.jl/pull/1476
 
 [julia-38079]: https://github.com/JuliaLang/julia/issues/38079
 

assets/html/scss/documenter/_patches.scss

@@ -66,6 +66,11 @@
   right: 0;
 }
 
+// fix spacing for math displays, particularly important with overflow scroll bar
+.katex-display, mjx-container, .MathJax_Display {
+  margin: 0.5em 0 !important;
+}
+
 // Set font subpixel rendering to auto on the HTML tag
 html {
   -moz-osx-font-smoothing: auto;

assets/html/scss/documenter/layout/_main.scss

@@ -8,6 +8,10 @@
       // Long inline words can happen, so we'll break them in case that, instead of letting
       // go into overflow. Most likely to happen with inline code snippets.
       overflow-wrap: break-word;
+
+      .math-container {
+        overflow-x: auto;
+      }
     }
 
     @include desktop {

src/Writers/HTMLWriter.jl

@@ -1635,7 +1635,10 @@ end
 
 mdconvert(i::Markdown.Italic, parent; kwargs...) = Tag(:em)(mdconvert(i.text, i; kwargs...))
 
-mdconvert(m::Markdown.LaTeX, ::MDBlockContext; kwargs...)   = Tag(:div)(string("\\[", m.formula, "\\]"))
+function mdconvert(m::Markdown.LaTeX, ::MDBlockContext; kwargs...)
+    @tags p
+    p[".math-container"](string("\\[", m.formula, "\\]"))
+end
 mdconvert(m::Markdown.LaTeX, parent; kwargs...) = Tag(:span)(string('$', m.formula, '$'))
 
 mdconvert(::Markdown.LineBreak, parent; kwargs...) = Tag(:br)()

test/examples/make.jl

@@ -37,6 +37,39 @@ module Mod
     [`func(x)`](@ref)
     """
     mutable struct T end
+
+    @doc raw"""
+    Inline: ``\frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}``
+
+    Display equation:
+
+    ```math
+    \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}
+    ```
+
+    !!! note "Long equations in admonitions"
+
+        Inline: ``\frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}``
+
+        Display equation:
+
+        ```math
+        \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}
+        ```
+
+    Long equations in footnotes.[^longeq-footnote]
+
+    [^longeq-footnote]:
+
+        Inline: ``\frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}``
+
+        Display equation:
+
+        ```math
+        \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}
+        ```
+    """
+    function long_equations_in_docstrings end
 end
 
 "`AutoDocs` module."

test/examples/src/man/style.md

@@ -83,3 +83,39 @@ This sentence has a footnote.[^5]
     x = randn(LogDensityProblems.dimension(∇P))
     @benchmark LogDensityProblems.logdensity_and_gradient($∇P, $x)
     ```
+
+## Math
+
+Inline: ``\frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}``
+
+Display equation:
+
+```math
+\frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}
+```
+
+!!! note "Long equations in admonitions"
+
+    Inline: ``\frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}``
+
+    Display equation:
+
+    ```math
+    \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}
+    ```
+
+Long equations in footnotes.[^longeq]
+
+[^longeq]:
+
+    Inline: ``\frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}``
+
+    Display equation:
+
+    ```math
+    \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2} + \frac{1+2+3+4+5+6}{\sigma^2}
+    ```
+
+```@docs
+Mod.long_equations_in_docstrings
+```